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  <font>This is sunday</font>
</br>
  <font color="red" size="1" face="宋体">This is Sunday</font></br>
  <font color="red" size="2">This is Sunday</font></br>
  <font color="red" size="3">This is Sunday</font></br>
  <font color="red" size="4">This is Sunday</font></br>
  <font color="red" size="5">This is Sunday</font></br>
  <font color="red" size="6">This is Sunday</font></br>
  <font color="red" size="7">This is Sunday</font></br>
  <u>下划线</u></br>
  <b>加粗</b></br>
  <i>倾斜</i></br>
  <em>em</em></br>
  <strong>加粗 语义化</strong></br>
  <strike>删除线</strike></br>
  <small>文字</small><big>文字</big></br>
  m<sup>2</sup>
  H<sub>2</sub>
 <br><span style="color:green">无样式行标签</span></br>
 <h1>title</h1>
 <h2>title</h2>
 <h3>title></h3>
 <h4>title</h4>
 <h5>title</h5>
 <h6>title</h6>
 <p>this is p1</p>
 <p>this is p1</p>
 <p>this is p2</p>
 <p>this is p2</p>
 <div>this is div</div>
 <div>this is div</div>
 <div style="color:red;">This is div</div>
 <div style="color:blue;">无样式块标签</div>
<pre>
锄禾日当午
汗滴禾下土
谁知盘中餐
粒粒皆辛苦
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